Nail-covered push-pull sleeve with embossed flat steel belt

Abstract

The utility model relates to a nail-covered push-pull sleeve with an embossed flat steel belt, which is characterized by comprising a lining pipe, a twisted steel wire layer is wound outside the lining pipe, a flat steel belt layer is wound outside the twisted steel wire layer, a plurality of bumps are arranged on the inner side wall of the flat steel belt, and the bumps are arranged on the outer side wall of the flat steel belt. The flat steel belt comprises a flat steel belt layer and a plurality of protruding blocks, the protruding blocks are arranged in an array mode in the length direction of the flat steel belt, grooves are formed between the protruding blocks in each row and between the protruding blocks in each column, an outer coating is arranged outside the flat steel belt layer, and spiral protrusions formed by winding the flat steel belt layer are arranged on the outer surface of the outer coating. The armor-coated push-and-pull sleeve with the embossed flat steel belt has the advantages that the assembly and the service life of the protective sleeve are ensured.

Description

Technical Field

[0001] The utility model relates to an armor-covered push-pull sleeve with an embossed flat steel belt. Background Art

[0002] Ordinary straight wire tube structure used for cable sheath tube has been gradually eliminated. At present, the cable sheath tube generally adopts armored structure, that is, on the basis of the original twisted steel wire layer (liner tube + steel wire), a flat steel belt layer is wrapped again, and finally plastic coating is performed.

[0003] Compared with cables used in ordinary environments, cables used in marine engineering are not only larger in size, with an outer diameter generally above 16mm, but also need to cope with extremely complex operating environments, often accompanied by high temperature, high humidity, extremely cold climates, and harsh environments of more than 15 meters, which puts higher requirements on the durability of the jacket. At present, the common problem in this field is that when the flat steel belt layer is flat, the bonding force between the flat steel belt and the inner layer of twisted strands is a very important technical indicator. When the jacket is bent at a certain angle, the outer coating and twisted steel wire often shrink in coating and elongate in twisted steel wire, which affects the assembly and service life of the jacket. Summary of the invention

[0004] The utility model aims to overcome the above-mentioned shortcomings and provide an armored push-pull sleeve with an embossed flat steel belt, which has high bonding strength between the outer flat steel belt and the inner steel wire rope and ensures the assembly and service life of the sleeve.

[0005] The purpose of the utility model is achieved in this way:

[0006] An armor-covered push-pull sleeve with an embossed flat steel strip comprises an inner lining tube, a twisted steel wire layer is wound around the outside of the inner lining tube, a flat steel strip layer is wound around the outside of the twisted steel wire layer, a plurality of protrusions are arranged on the inner side wall of the flat steel strip, the plurality of protrusions are arranged in an array along the length direction of the flat steel strip, grooves are arranged between each row and each column of the protrusions, an outer coating is arranged on the outside of the flat steel strip layer, and the outer surface of the outer coating presents spiral protrusions formed by the winding of the flat steel strip layer.

[0007] As a preferred embodiment, the outer diameter of the twisted steel wire layer after winding is 12.1±0.20mm, the steel wires of the twisted steel wire layer are left-twisted, and the twist pitch is 200±20mm.

[0008] As a preferred embodiment, the outer diameter of the flat steel strip layer after winding is 14.3±0.20 mm, and the flat steel strip of the flat steel strip layer is right-twisted with a lay pitch of 9.5±1.5 mm.

[0009] As a preferred embodiment, the number of protrusions on the outer flat steel belt is at least three rows, and the width exceeds 1 / 10 of the diameter of the steel wires in the twisted steel wire layer.

[0010] As a preference, the outer diameter of the inner liner tube is 9.5 mm, the inner diameter is 7.5 mm, and the material of the inner liner tube is PE material.

[0011] As a preferred embodiment, the twisted steel wire layer has 12 steel wires.

[0012] Preferably, the steel wires of the twisted steel wire layer are smooth steel wires with a diameter of 1.3±0.01 mm.

[0013] As a preferred embodiment, the flat steel strip of the flat steel strip layer is pressed from galvanized steel wire with a diameter of 2.3 mm into a flat steel strip with a size of 3.25±0.5*1.1±0.05 mm.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] The outer layer flat steel belt of the utility model is a special-shaped flat steel belt, and the protruding convex blocks on the inner side wall form edges and corners that are evenly interrupted and staggered by the outer layer wires of the twisted strands of the twisted steel wire layer, forming an embossed flat steel belt, and achieving a staggered and tightly combined state. Compared with the conventional structure, the bonding force between the flat steel belt and the twisted strands of this structure is significantly improved. An armor-covered push-pull sleeve with an embossed flat steel belt has the advantages of ensuring the assembly and service life of the sleeve. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 The figure is a three-dimensional structural diagram of an armor-covered push-pull sleeve with an embossed flat steel strip.

[0017] Figure 2 for Figure 1 A schematic diagram of the flat steel strip end structure of an armored push-pull sleeve with an embossed flat steel strip.

[0018] Figure 3 The cross-sectional view is of an armor-covered push-pull sleeve with an embossed flat steel strip.

[0019] in:

[0020] Center rope 1

[0021] Twisted wire layer 2

[0022] Flat steel strip 3, convex block 31, groove 32

[0023] Outer coating 4. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] Referring to the attached drawings, the utility model relates to an armored push-pull sleeve with an embossed flat steel belt, comprising an inner lining tube 1, the outer diameter of the inner lining tube 1 is 9.5 mm, the inner diameter is 7.5 mm, the material of the inner lining tube 1 is PE material, the outer side of the inner lining tube 1 is wound with a twisted steel wire layer 2, the twisted steel wire layer 2 has 12 steel wires, the steel wires of the twisted steel wire layer 2 are smooth steel wires with a diameter of 1.3 ± 0.01 mm, the outer side of the twisted steel wire layer 2 is wound with a flat steel belt layer 3, the flat steel belt layer The flat steel strip 3 is pressed into a flat steel strip of 3.25±0.5*1.1±0.05mm from a galvanized steel wire with a diameter of 2.3mm. A plurality of protrusions 31 are arranged on the inner side wall of the flat steel strip. The plurality of protrusions 31 are arranged in an array along the length direction of the flat steel strip, preferably three rows of protrusions 31 are arranged in parallel, and grooves 32 are arranged between each row and each column of protrusions 31. An outer coating 4 is provided on the outside of the flat steel strip layer 3, and the outer surface of the outer coating 4 can present a spiral protrusion formed by the winding of the flat steel strip layer 3.

[0026] The outer diameter of the twisted steel wire layer 2 after winding is 12.1±0.20mm, the steel wires of the twisted steel wire layer 2 are left-twisted, and the twist pitch is 200±20mm;

[0027] The outer diameter of the flat steel strip layer 3 after winding is 14.3±0.20mm, and then hammering is performed, and the outer diameter after hammering is 14.1±0.10mm. The flat steel strip of the flat steel strip layer 3 is right-twisted, and the lay length is 9.5±1.5mm;

[0028] The outer layer of the flat steel belt is a special-shaped flat steel belt. The protruding blocks on the inner wall form edges and corners, and the outer layer wires of the twisted strands of the twisted steel wire layer are evenly interrupted and staggered to form an embossed flat steel belt, and achieve a state of staggered and tightly combined. Compared with the conventional structure, the bonding strength of the flat steel belt and the twisted strands in this structure is significantly improved.

[0029] The number and width a of the outer flat steel belt ridges can be determined according to the size of the structure. Generally, the number of ridges is at least three rows, and the width a is greater than 1 / 10 of the diameter of the twisted steel wire layer.

[0030] The above are only specific application examples of the utility model, and do not constitute any limitation on the protection scope of the utility model. Any technical solution formed by equivalent transformation or equivalent replacement falls within the protection scope of the utility model.

Claims

1. A push-pull sleeve with embossed flat steel strip, characterized in that It comprises an inner lining tube, the outer part of which is wound with a twisted steel wire layer, the outer part of which is wound with a flat steel belt layer, the inner side wall of which is wound with a plurality of protrusions, the plurality of protrusions are arranged in an array along the length direction of the flat steel belt, a groove is provided between each row and each column of the protrusions, the outer part of the flat steel belt layer is provided with an outer coating layer, the outer surface of which presents spiral protrusions formed by the winding of the flat steel belt layer.

2. The armor-covered push-pull sleeve with embossed flat steel strip according to claim 1, characterized in that The outer diameter of the twisted steel wire layer after winding is 12.1±0.20mm, the steel wires of the twisted steel wire layer are left-twisted, and the twist pitch is 200±20mm.

3. The armor-covered push-pull sleeve with embossed flat steel strip according to claim 1, characterized in that The outer diameter of the flat steel strip layer after winding is 14.3±0.20mm, and the flat steel strip of the flat steel strip layer is right-twisted with a lay pitch of 9.5±1.5mm.

4. The armor-covered push-pull sleeve with embossed flat steel strip according to claim 1, characterized in that The number of protrusions on the outer flat steel belt is at least three rows, and the width exceeds 1 / 10 of the diameter of the steel wires in the twisted steel wire layer.

5. The armor-covered push-pull sleeve with embossed flat steel strip according to claim 1, characterized in that The outer diameter of the inner liner tube is 9.5 mm, the inner diameter is 7.5 mm, and the material of the inner liner tube is PE.

6. The armor-covered push-pull sleeve with embossed flat steel strip according to claim 1, characterized in that There are 12 steel wires in the twisted steel wire layer.

7. The armor-covered push-pull sleeve with embossed flat steel strip according to claim 1, characterized in that The steel wires of the twisted steel wire layer are smooth steel wires with a diameter of 1.3±0.01 mm.

8. The armor-covered push-pull sleeve with embossed flat steel strip according to claim 1, characterized in that The flat steel strip of the flat steel strip layer is pressed from galvanized steel wire with a diameter of 2.3 mm into a flat steel strip with a size of 3.25±0.5*1.1±0.05 mm.

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